Malicious PDF — malware analysis report

Static analysis result for SHA-256 29b7b29b89481cb7…

MALICIOUS

PDF

78.4 KB Created: 2021-03-14 15:30:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 30d47ecb6057828a23f6b8ab75a98b27 SHA-1: 1197efb7373efaab27d93cc0bb390bd48c9625d0 SHA-256: 29b7b29b89481cb7bbaab37058ab15dfda41344dd4c8daed3a7aab683633437c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded URLs that lead to suspicious domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of external URIs and the document's structure point towards a lure to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://xajibur.ru/award?keyword=michelle+beatles+chords+pdf PDF link annotation
    • http://fazejajogavu.medianewsonline.com/wemovurokap.pdfIn PDF document text
    • http://xejepurefe.scienceontheweb.net/evenflo_symphony_dlx_ashland_grey_review.pdfIn PDF document text
    • http://pibarulajido.getenjoyment.net/sabezizubobiror.pdfIn PDF document text
    • http://blancop.xyz/57421854384jfz36.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/jgVAjaU/44744065911.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/dih3jbl/61532980798.pdfIn PDF document text
    • https://cdn.sqhk.co/dujagazatad/ejdL2sa/nezerofuvow.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/HThhtii/cute_girl_avatar_maker_mod_apk.pdfIn PDF document text
    • http://community-day.ru/how_hard_is_accounting_at_baruch0nbhc.pdfIn PDF document text
    • http://tidirakozodawon.getenjoyment.net/lagapilumexo.pdfIn PDF document text
    • http://biomanix.best/pafifevefenavijeleran1yqm.pdfIn PDF document text
    • http://lazerepil.site/bogabazunibatudsxmon.pdfIn PDF document text
    • https://cdn.sqhk.co/bipadifudame/gicjj9x/zodiac_sign_fun_facts_virgo.pdfIn PDF document text
    • http://politach.com/nbconvert_python_tokxhzv.pdfIn PDF document text
    • http://odemebayisitrafik.com/28644835177ky16r.pdfIn PDF document text
    • http://talemine.getenjoyment.net/is_there_a_replacement_remote_for_roku_streaming_stick.pdfIn PDF document text
    • http://wwbook.org/how_to_replace_belt_on_dyson_vacuum5v2ft.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/amma_images_photos.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/8354468306.pdfIn PDF document text
    • http://kepagewav.atwebpages.com/can_a_trustee_buy_trust_property.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/modafinilemarajojusazumef.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/believer_3d_audio_free.pdfIn PDF document text
    • http://fiforeru.atwebpages.com/nixumifama.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/4353868097.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CD 5388 bytes
SHA-256: ef3035875f4b2ce08eb1cff6f5482636e471b3b42d4a7ef0b65917907f15e4ef
font_01_sfnt_off00010420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10420 12016 bytes
SHA-256: 36e469c79beb84ae2ee88a4f763e459795569a0c5959b72b9b633188b5223003

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